My Jennair downdraft cook top ( JED8430ADB ) keeps tripping the main breaker. It first did it while I was using the lower right (dual) element. The breaker and house wiring have tested good. Once I connect the red wire the breaker trips instantly. My exhaust fan still works but I have no burners working. I understand that the black wire is one half of my required 220 volts and the red is the other half. I suspect the problem is with the dual burner.What part numbers will I need to fix this? Thanks for your time.